chore(package): update nyc to version 10.0.0 (#21)

Author: greenkeeperio-bot

package.json

@@ -21,7 +21,7 @@
   "devDependencies": {
     "ava": "^0.17.0",
     "coveralls": "2.x",
-    "nyc": "^9.0.1",
+    "nyc": "^10.0.0",
     "source-loader": "^0.2.0",
     "spike-core": "^0.12.0",
     "standard": "^8.0.0"